Pulley-block.



no. 7|2,47|. Patented Nov. 4, I902.

G. AVEBLY. PULLEY mock.

' (Applicatiomfiled Oct. 30, 1900.

(lo Modal.)

FIGQ

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UNITED STATES P TENT OFFICE;

GEORGES AVERLY, or LYONS, FRANCE.

PULLl- I Y-BLOCK.

SPECIFICATION forming part of Letters Patent No. 712,471, dated November4, 1902.

Application filed October 3Q, 1900. Serial No. 3%903- (N0 m -l To 0,06whom it may concern:

Be it known that I, GEORGES AVERLY, a citizen of the Republic of France,residing at Lyons, France, have invented certain new and usefulImprovements in Pulley-Blocks, of which the following is a full, clear,and exact description. and for which I have made application in France,dated June 26, 1900.

The pulley-block forming the subject of the present invention isdistinguished by the fact that the. mechanism can be operated either byan electric motor or by hand, while the electric motor can'also beutilized for moving the loadin a horizontal direction.

The ordinary arrangement of the appara tus is illustrated in theaccompanying drawings, in which.

Figures 1 and2 are two elevations drawn at right angles to each other,and Fig. 3 is a plan of the pulley-block separately.

The apparatus comprises an electromotor a, operated in either directionby a cord passing around a pulley b, which drives the commutator,inclosed in a box 0, with the rheostat. The shaft of the motor carries apinion d, gearing with an internal toothed wheel e, fixed on the endlessscrew-shaft f, which drives the worm wheel g. On the same axis as thislatter wheel is fixed the chain-wheel h,which receives the lifting-chaini.

In the improved pulley-block the wheel 8 is loose on its shaft and canbe caused to rotate therewith by a clutch-sleevej. The pulleyblock issuspended from a carriage is, supported by two rollers Z Z, running onrails m m, which form the road on which the pulleyblock travels and aresupported by various means, according to situation. To the carriage itare fixed two traveling contacts or trolleys 1ft, collecting the currentfrom two insulated electric conductors u u and conveying this current tothe motor Ct in any position of the pulley-block by suitable electric.connections. (Not shown.) On the shaft of one of the rollers Z Z isloosely mounted a pulley n, which can be caused to turn therewith by aclutch-sleeve 0. The pulley n is driven by a cord, chain, or beltpassingfrom the pulleyp, fixedto the wheel 6 of the pulley-block. Theclutch-sleevesj and 0 are moved in opposite directions by a rockinglever r, operated from the ground by means of two pulling-cords s s. Thebrake r is for this purpose fixed on an axis 2, carried by a support 1,fixed to the carriage 7c, and the cords are attached to the ends of atraverse-lever 3, fixed, like brake r, on axis 2.

The working of the traveling pulley-block is as follows: The motor beingput in motion rotates the wheel a and pulleys p and 'n, and

according as one or the other of these pulleys has been connected withits shaft it will drive either the lifting-chain i or the rollers ZZ,which will effect the horizontal motion of the carriage 7c and of thepulley-block. Thus the load can be raised to the desired height, and

it can then be transported to any other point of the road on which thepulley-block travels. In order to be enabled to utilize the pulleyblockin case of stoppage of the electric current, there is fixed to the wheelea chaintric current or by hand. It can thus serve all the purposes of afactory. This latter arrangement will be particularly applicable topulley-blocks of great power.

Having fully described my invention, what I claim, and desire to secureby Letters Patcut, is-

In combination a single elevated track-rail, a U shaped trolley-framehaving wheels j ournaled on the arms of the frame and resting on saidsingle rail, a motor-frame having a hook engaging an eye on saidtrolley-frame, a hoisti'ng-wheel carried by said frame, drivingconnections between said motor and hoistingwheel, flexible drivingconnections between said motor and a wheel of the trolley-frame, andclutch mechanism for controlling said connections, substantiallyasdesc-ribed.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGES AVERLY.

Witnesses:

GASTON J EAUNIAUX, J ULES GIROD.

